I find that the secret for me is to correctly speak the beginning sound, end with "saurus", and then add a bunch of syllables featuring vowels and "pata". The key is confidence. My guys never know the difference!

Dinosaurs twisting your tounge? Try reading the "Oh Say Can You Say Di-no-saur" book by Bonnie Worth, one of the new Dr. Seuss Cat-in-the-Hat science books. It's really awesome, because they give you a pronounciation guide for each dinosaur. And make you look smart in front of your kids.